Product comparison · 2 external hard drives

iStorage 3.5" Eco Drive 80GB vs iStorage QS2 500GB SATA

9specifications compared
4differ
5identical
17known for one product only

Key differences

HDD capacity
- 3.5" Eco Drive 80GB:80 GB
- QS2 500GB SATA:500 GB
Storage drive buffer size
- 3.5" Eco Drive 80GB:8 MB
- QS2 500GB SATA:16 MB
Weight
- 3.5" Eco Drive 80GB:900 g
- QS2 500GB SATA:907 g

Side by side

Differences highlightedShow differences only

Comparison of 3.5" Eco Drive 80GB, QS2 500GB SATA
26 specifications	A iStorage 3.5" Eco Drive 80GB View product	B iStorage QS2 500GB SATA View product
Hard drive2 differ
HDD capacityDiffers	80 GB	500 GB
HDD sizeKnown for one	3.5"	Unknown — not stated by the source
Storage drive average seek timeKnown for one	9 ms	Unknown — not stated by the source
Storage drive buffer sizeDiffers	8 MB	16 MB
Ports & interfacesidentical
USB connectorKnown for one	USB	Unknown — not stated by the source
USB versionKnown for one	2.0	Unknown — not stated by the source
Weight & dimensions1 differ
WidthKnown for one	196 mm	Unknown — not stated by the source
DepthKnown for one	32 mm	Unknown — not stated by the source
HeightKnown for one	127 mm	Unknown — not stated by the source
WeightDiffers	900 g	907 g
Packaging dataidentical
User guideKnown for one	Yes	Unknown — not stated by the source
Bundled softwareKnown for one	Unknown — not stated by the source	NTI Backup NOW! 4 OEM (Windows)
Other features1 differ
USB cableKnown for one	USB	Unknown — not stated by the source
Compatible operating systemsDiffers	- Windows 98 - Windows 98SE - Windows ME - Windows 2000 - Windows XP - Windows Vista - Mac OS X +	- Windows 98 - Windows 98SE - Windows ME - Windows 2000 - Windows XP - Windows Vista - Mac OS X
Sustained data rateKnown for one	25 MB/s	Unknown — not stated by the source
Access timeKnown for one	Unknown — not stated by the source	8.5 ms
Data transfer rateKnown for one	Unknown — not stated by the source	3 Gbit/s
Interface typeKnown for one	Unknown — not stated by the source	USB 2.0 & eSATA
Supported data transfer ratesKnown for one	Unknown — not stated by the source	USB: 480mbps; eSATA: 3gbps
Dimensions (WxDxH)Known for one	Unknown — not stated by the source	196 x 114 x 35 mm
Operational conditionsidentical
Operating shockKnown for one	Unknown — not stated by the source	200 G

A dash means the value is not stated by the source. Unknown values are never counted for or against a product, and there is no overall score.

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